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	Prefix	Description

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6

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Peers

	ASN	Description	IPv4	IPv6
	AS20965	GEANT Vereniging	✔	✔
	AS7575	Australian Academic and Research Network (AARNet)	✔	✔
	AS24475	ThaiREN.Thailand Research and Education Network Thailand	✔	✔
	AS24489	Trans-Eurasia Information Network (TEIN2) - North	✔	✔
	AS24514	Malaysian Research & Education Network	✔	✔
	AS7660	Asia Pacific Advanced Network - Japan	✔	✔
	AS63961	Bangladesh Research and Education Network (BdREN)	✔	✔
	AS9885	NKN INTERNET GATEWAY NETWORK	✔	✘
	AS23855	Singapore Advanced Research and Education Network	✔	✔
	AS9270	National Infomation Society Agency	✔	✔
	AS17579	KISTI	✔	✘
	AS38229	Lanka Education & Research Network, NREN	✔	✔
	AS9264	Academia Sinica	✔	✔
	AS45773	PERN AS Content Servie Provider, Islamabad, Pakistan	✔	✘
	AS139588	Institute of Technology of Cambodia	✔	✘

aut-num:        AS24490
as-name:        TEIN2-SG-AP
descr:          Trans-Eurasia Information Network (TEIN2) - SG
descr:          China Education and Research Network Center
descr:          Tsinghua University, Beijing 100084, China
country:        CN
import:         from AS20965 action pref=10; accept ANY
import:         from AS7660 action pref=10; accept ANY
import:         from AS9270 action pref=10; accept ANY
export:         to AS20965 announce AS24490
export:         to AS7660 announce AS24490
export:         to AS9270 announce AS24490
default:        to AS20965 action pref=10; networks ANY
admin-c:        CER-AP
tech-c:         CER-AP
abuse-c:        AC1685-AP
mnt-lower:      MAINT-CERNET-AP
mnt-routes:     MAINT-CERNET-AP
mnt-by:         APNIC-HM
mnt-irt:        IRT-CERNET-AP
last-modified:  2020-09-03T09:16:20Z
source:         APNIC

Last Update: 2025-12-25T03:22:12Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RADB	as7575:as-edge	157
RIPE	as20965:as-from-tein-to-geant	654
APNIC	as23911:as-customers-v6	108
RADB	as7575:as-research	36
APNIC	as23855:as-nren-transit	16
APNIC	as4538:as-customers-v6	110
ARIN	as293:as-from-singaren-to-esnet	4548
RADB	as-pacnet-customer-proxy-register	1171
RADB	as-anc-customer-proxy-register	2403
ARIN	as-xo-b	58180
APNIC	as4538:as-customers	116